2'' Celestron UHC/LPR Filter

Celestron UHC/LRP Filter Is A Hybrid Filter. Combination Of UHC Spectrum Cut With Higher Tolerance Of Other Spectrum, This Is How Celestron UHC/LPR Was Bord

The Term UHC Means Ultra High Contrast Filter - This Is A Very Narrow Band Filter Allowing Only Very Specific Spectrum Of Band (Typical Hydrogen Alpha And Oxygen III Band) To Pass Thru. A True UHC Filter Will Significantly Enhanced Nebula Spectrum But Dims Other Deeps Space Object. Celestron Re-Enginner This Filter To Have A Higher Spectrum Band Pass, Which Allow High Rate Of Other Light To Pass Thru - Dimming Light Polution, But Allowing Nebula And Also Other Deep Space Objects - Galaxies And Star Clusters To Be Visible

If You Need A General Purpose Filter With Medium UHC Blockage, Celestron UHC/LPR Filter Are The Best

Features

Dieletric Coated Optics

Celestron UHC/LPR Filter Feature Dieletric Coating. The Lens Are Coating With Plasma Ion Beam Hardering The Lens For Durability (Dielectric Coating Are Harder Than Diamond) The Precise Coating Allow Diffraction Limited Optics Even When Using Filter

Specific Spectrum Cut Off

Celestron UHC/LPR Filter Features High Specific Spectrum Cut Off Of Tranmission. This Allow Very Specific Light Wavelength To Pass Thru While Blocking The Rest, Which Is Essential For Light Pollution Reduction